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Finding the Fourth Proportional to 250,339.50, 345,468.51 and 137,164.86

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Solution

The fourth proportional to 250,339.50, 345,468.51 and 137,164.86 is: 189,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,339.50 : 345,468.51 = 137,164.86 : x
  2. Step 2: Convert to fraction form
    250,339.50/345,468.51 = 137,164.86/x
  3. Step 3: Cross multiply
    250,339.50x = 345,468.51 × 137,164.86
  4. Step 4: Simplify right side
    250,339.50x = 47,386,139,808.56
  5. Step 5: Solve for x
    x = 47,386,139,808.56/250,339.50
  6. Step 6: Final answer
    x = 189,287.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.